GCC will not issue a compiler warning when a virtual inheritted method is
hidden
Steps:
Use the following code to create a file named HideMethod.cpp
class Parent
{
public:
virtual ~Parent(){}
virtual void Method(){}
};
class Child : public Parent
{
public:
virtual void Method(int){}
};
Compile the code with the following command.
g++ -g -Wall -ansi -pedantic -c HideMethod.cpp
Results:
The code will compile with no warnings.
Expected:
The method Parent::Method() is hidden by the method Child::Method(int), and
because the -Wall switch was used the compiler should issue a warning about
this as it can lead to problems.
Adding this code
class GrandChild : public Child
{
public:
void Test(){ Method(); }
};
to HideMethod.cpp will correctly produce this error:
HideMethod.cpp: In member function `void GrandChild::Test()':
HideMethod.cpp:17: error: no matching function for call to
`GrandChild::Method()'
HideMethod.cpp:11: note: candidates are: virtual void Child::Method(int)
--
Summary: GCC does not warn about hidden methods
Product: gcc
Version: 3.4.3
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tron dot thomas at verizon dot net
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18410
